.foot {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: space-around;
}

.foot a {
    text-decoration: none;
    color: black;
    line-height: calc(0.44rem*2);
    text-align: center;
    flex: 1;
}

.foot .active {
    background: lightblue;
    font-weight: 700;
}